Results 241 to 250 of about 1,287,317 (274)

Imaging multilevel exciton transport enabled by correlated electronic states. [PDF]

Nat Commun
Liu H, Chen S, Xu H, Han R, Sun Z, Huang S, Zhang X, Huang L, Luo J, Liu D.   +9 more
europepmc   +1 more source

Reversible three-dimensional chirality continuum enabled by luminomagnetic superstructure in gel. [PDF]

Nat Commun
Jeong KJ, Zhang L, Jia F, Qi F, Gong J, Tang Z.   +5 more
europepmc   +1 more source

Highly tunable band structure in ferroelectric R-stacked bilayer WSe₂. [PDF]

Nat Commun
Li Z, Thor P, Kourmoulakis G, Ivanova TV, Taniguchi T, Watanabe K, Yu H, Brotons-Gisbert M, Gerardot BD.   +8 more
europepmc   +1 more source

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A Comparison of Apical Transportation Between FlexMaster and Twisted Files Rotary Instruments

Journal of Endodontics, 2012
The aim of this study was to evaluate apical transportation in root canals after the use of Twisted Files (TF; SybronEndo, Orange, CA) and FlexMaster (VDW, Munich, Germany) #40/04 rotary files.A double-digital radiographic technique was used to compare apical transportation between the TF and FlexMaster systems.
Miguel Roig-Cayón, Juan Gonzalo Olivieri, Montse Mercade   +2 more
exaly   +3 more sources

In Vitro Comparison of Cyclic Fatigue Resistance of ProTaper, WaveOne, and Twisted Files

Journal of Endodontics, 2012
The aim of this study was to compare the cyclic fatigue resistance of 3 nickel-titanium (NiTi) endodontic instruments from ProTaper, WaveOne (WO), and Twisted Files (TF).Cyclic fatigue testing was conducted by operating instruments from ProTaper F2, WO 25 .08, and TF 25 .08.
Vicente Faus-Matoses
exaly   +3 more sources

Torsional Properties of Twisted and Machined Endodontic Files

Journal of Endodontics, 1990
The torsional properties of conventionally twisted K-type endodontic files and recently developed machined K-type endodontic files were compared. File sizes 10 through 40 were subjected to torsional load in clockwise and counterclockwise directions independently.
Jack I Nicholls
exaly   +3 more sources

Cyclic Fatigue and Fracture Characteristics of Ground and Twisted Nickel-Titanium Rotary Files

Journal of Endodontics, 2010
The purposes of this study were to compare the fatigue resistance of traditional, ground nickel-titanium rotary instruments with the Twisted File and to examine the fracture characteristics of the fatigued fragment.Size #25, 0.06 tapered, TF (SybronEndo), RaCe (FKG Dentaire), Helix (DiaDent), and ProTaper F1 (Dentsply Maillefer) were examined with ...
Hyeon-Cheol Kim, Böck Hur
exaly   +5 more sources

Vertical Load Induced With Twisted File Adaptive System During Canal Shaping

Journal of Endodontics, 2016
To evaluate the vertical load induced with the Twisted File Adaptive (TFA; SybronEndo, Orange, CA) system during canal shaping of extracted teeth by comparing it with the Twisted File (TF, SybronEndo), ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland), and ProTaper Universal (PTU, Dentsply Maillefer) systems.Fifty-two root canals were ...
Ahmed Jamleh, Khalid Alfouzan
exaly   +3 more sources

Cyclic Fatigue Analysis of Twisted File Rotary NiTi Instruments Used in Reciprocating Motion

International Endodontic Journal, 2012
Gambarini G, Gergi R, Naaman A, Osta N, Al Sudani D. Cyclic fatigue analysis of twisted file rotary NiTi instruments used in reciprocating motion. International Endodontic Journal, 45, 802–806, 2012.AbstractAim  To evaluate the cyclic fatigue fracture resistance of engine‐driven twisted file (TF) instruments under reciprocating movement.Methodology  A ...
Alfred Naaman
exaly   +3 more sources